The Child Evaluation Measure (CEM) for preschool children was developed to provide an inclusive assessment instrument that covers primary academic content areas (reading, literacy, mathematics, and science), domains of child development (social, emotional, and physical/motor skills), and other areas foundational for optimal development of the young child in today’s society (music and creative arts, health and wellness, character education, and technology applications). The present study investigated CEM score validity on the 12 subscales and the total measure using data for 301 children assessed on each of two occasions. Both score reliability and score validity analyses were conducted.